I have installed the samba share from the home assistant add-ons and am getting the following log messages without access to samba from windows 10. I have the configuration set for user/pass in the add-on.
https://pastebin.com/ - top of log
samba 2 ha - Pastebin.com - bottom of log
There are no timestamps and the logs are a little less friendly so hopefully this helps.
Thank you kindly.
The same thing happened to me with a share that was working fine, and suddenly it stopped working. I think one of the latest Windows 10 updates created the problem. What I did was incorporate the key for that shared resource into the Windows 10 password manager, it will ask you for the server (HASSIO IP), the username and password. After that I was able to enter without problems. I hope to be helpful.